Evacuated tubes are the absorber of the solar water heater. They absorb solar energy converting it into heat for use in water heating. Evacuated tubes have already been used for years in Germany, Canada, China and the UK. There are several types of e..

As a key component of the heat-pipe collector, heat-pipe plays a very important role in this solar collecting system. The heat-pipe is composed of heat-energy absorption unit and condenser unit, and is hollow with the space inside evacuated. Under th..